I just thought of another one - Bolt Thrower. It's kinda moot, though, because according to them they are done putting out albums because they said they would stop after the "perfect BT album", which they consider 2005's "Those Once Loyal" to be. I just wanted to bitch that there were no BT albums in 2008 and 2009 (and I guess forever, until they go the route everyone else has and "reunite").

I believe they actually recorded an album and decided not to release it because they didn't feel it was good enough.
And they can't reunite, they aren't broken up.

Not metal, but King Crimson. After finally getting back together last year with their best lineup in years and doing a really successful mini-tour which includes two of the best concerts I've ever seen... to suddenly stop doing anything and have every member just go and do their own thing again is just ridiculous. They need to get back to business and write some damn music. It's been 6 years since The Power To Believe.

Fuck, too many to name haven't released this year, but will next year, or did last year.

I absolutely do not recall the last year that sucked for metal. There have been fucking great releases every year for as long as I can remember.

Well, for a few of these, they had an album out just last year, so it'd be just a little ridiculous to expect them to have one out again this year too. Also, Queensryche did release an album, but you may be forgetting it because it sort of blew.

edit: holy shit i cannot stop myself from posting. and I typed this in like, 2 seconds. I'm so hyper. my tolerance for caffeine has plummeted ever since I quit daily coffee about a year and a half ago. Shame on me for thinking 3 cups of coffee would still only have a minimal effect on me

I believe they actually recorded an album and decided not to release it because they didn't feel it was good enough.
And they can't reunite, they aren't broken up.

Technically speaking, they got together in the studio and tried, but felt it wasn't up to their standards. I can't confirm or deny whether they actually laid anything down - chances are they did, but I'm sure they didn't mix it or produce it, so in my mind anything they may have recorded is unfinished work. At any rate, I guess you're technically correct on the break-up thing, but they are certainly inactive at this point, and for the near future if not permanently according to their web site. So as I say, the only hope for another reslease is for them to decide to try again, which is essentially the same decision as a "reunion" would be. To-MAY-to, to-MAH-to.